The AirTAC GFR400C15LC2K AirTAC Filter Regulator PT1/2, Low-Pressure is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR400C15LC2K is a filter regulator: one body that removes water and particulate from compressed air and regulates the pressure delivered downstream. This size 400 unit is built for 1/2 in lines with PT thread ports (the standard thread; G and NPT are order options), carries the standard 40 um filter element, and uses the differential-pressure drain, the default drain type for this family. The regulator is the low-pressure (L) type, a round external gauge with a psi scale is fitted so the set point can be read directly, and a reverse (check) valve (code K) is included. The bowl on this size is polycarbonate, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and options that include automatic or manual drains, a 5 um element (code W), gauge scales in MPa, psi or bar, and G or NPT threads. Max inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow for this series is published as curves rather than a single rating, so ask us to confirm sizing and any datasheet detail against your application before ordering.
| Model | GFR400C15LC2K AirTAC Filter Regulator PT1/2, Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| C1 | Port size See datasheet. This body offers 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR400 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
Feeding filtered, regulated air to the clamp cylinders on a machining fixture, where the low-pressure regulator type suits circuits held at modest set points and the fitted psi gauge lets operators read and verify the clamping pressure at the fixture.
Supplying clean, regulated air to the diverter and stopper cylinders along a packaging or distribution conveyor, with the 40 um element catching water and pipe scale before it reaches the valve stack and the check valve fitted for circuits that must not backflow.
Mounting a filter regulator at the air drop feeding an assembly cell, so condensate dropping out of the main line is collected in the bowl and the cylinders and air tools downstream see a steady, set pressure instead of raw header air.
The real choices on this family are the size and port step, the drain type, the filter grade, the gauge and its scale, the thread and the bracket. This code fixes them: size 400 with PT1/2 ports for 1/2 in lines, the standard 40 um element, differential-pressure drain, low-pressure regulation, a round psi gauge, a fitted check valve and an included bracket. If your line needs finer filtration, the 5 um W element is the option; if you would rather drain by hand or fully automatically, manual (M) and automatic (A) variants exist in the same family.
Sizing against flow is the one step that cannot be done from a single number: the catalogue publishes G-series flow as curves, not a rated figure. Send us your required flow and working pressure and we will confirm from the datasheet that the GFR400 at PT1/2 is the right size before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes G-series flow as curves rather than a single rated figure, so we do not quote a number here. Send us your required flow and working pressure and we will confirm from the datasheet whether the GFR400 at PT1/2 suits your line before you order.
This unit is the low-pressure regulator variant rather than the standard one. The exact adjustment range for the low-pressure type is not published in the sheet we work from, so we confirm it on request. The fitted round gauge reads in psi, so the set point is visible directly at the unit.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.